Pith Number

pith:4CNXKEEB

pith:2019:4CNXKEEBU6X6L5KWOSIWKH57LA

not attested not anchored not stored refs pending

String topology and configuration spaces of two points

Florian Naef, Thomas Willwacher

arxiv:1911.06202 v1 · 2019-11-14 · math.QA · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4CNXKEEBU6X6L5KWOSIWKH57LA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T00:19:16.127734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e09b751081a7afe5f5567491651fbf582c487821d85769bd429034a914d6c404

Aliases

arxiv: 1911.06202 · arxiv_version: 1911.06202v1 · doi: 10.48550/arxiv.1911.06202 · pith_short_12: 4CNXKEEBU6X6 · pith_short_16: 4CNXKEEBU6X6L5KW · pith_short_8: 4CNXKEEB

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4CNXKEEBU6X6L5KWOSIWKH57LA \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e09b751081a7afe5f5567491651fbf582c487821d85769bd429034a914d6c404

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d99cbc22dc22f6df7d7af543dd4cfe3106fef944942fefc2a1801d42717edc3",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2019-11-14T15:55:50Z",
    "title_canon_sha256": "159cf3735c26b6d7ab590d8f35cca4b98cf4b031a18c961faf8849d90f6330e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.06202",
    "kind": "arxiv",
    "version": 1
  }
}